var http = require("http")

var server = http.createServer(function(req,res){
    res.writeHead(200, {"Content-type": "text/html;charset=UTF-8"});        
    var userurl = req.url;
    
    // substr函数来判断此时的开头
    if(userurl.substr(0,9) == "/student/"){
        var studentid = userurl.substr(9);
        if(/^\d{10}$/.test(studentid)){
            res.end("您要查询学生信息，id为 "+ studentid);
        }else{
            res.end("学生学号位数不对");
        }
    }else if(userurl.substr(0,9) == "/teacher/"){
        var teacherid = userurl.substr(9);
        if(/^\d{6}$/.test(teacherid)){
            res.end("您要查询老师信息,id为 " + teacherid);
        }else {
            res.end("老师学号位数不对");            
        }
    }else{
        res.end("错误")
    }
});
server.listen(3000,"127.0.0.1");
